From 386cfaadb7a2d3c3de4a6a79d52fef86daad2f48 Mon Sep 17 00:00:00 2001
From: rudolfkoenig <rudolfkoenig@2b470e98-0d58-463d-a4d8-8e2adae1ed80>
Date: Sat, 1 Dec 2012 09:24:09 +0000
Subject: [PATCH] Wraparound corrected for power reset

git-svn-id: https://svn.fhem.de/fhem/trunk@2238 2b470e98-0d58-463d-a4d8-8e2adae1ed80
---
 fhem/FHEM/15_CUL_EM.pm | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/fhem/FHEM/15_CUL_EM.pm b/fhem/FHEM/15_CUL_EM.pm
index 75dea8290..d793f33cc 100755
--- a/fhem/FHEM/15_CUL_EM.pm
+++ b/fhem/FHEM/15_CUL_EM.pm
@@ -136,8 +136,9 @@ CUL_EM_Parse($$)
     }
 
     # correct counter wraparound
-    if($total_cnt< $total_cnt_last) {
-      $basis_cnt += 65536;
+    if($total_cnt < $total_cnt_last) {
+      # check: real wraparound or reset only
+      $basis_cnt += ($total_cnt_last > 65000 ? 65536 : $total_cnt_last);
       $readings{basis} = $basis_cnt;
     }